US9068709B2 - Optical unit for signaling and/or lighting device - Google Patents

Optical unit for signaling and/or lighting device Download PDF

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Publication number
US9068709B2
US9068709B2 US13/979,772 US201213979772A US9068709B2 US 9068709 B2 US9068709 B2 US 9068709B2 US 201213979772 A US201213979772 A US 201213979772A US 9068709 B2 US9068709 B2 US 9068709B2
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US
United States
Prior art keywords
light guide
optical unit
light
board
hood
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US13/979,772
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English (en)
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US20130322104A1 (en
Inventor
Christophe Baert
Sébastien Denis
Xavier Soenen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Assigned to VALEO VISION reassignment VALEO VISION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAERT, CHRISTOPHE, DENIS, SEBASTIEN, SOENEN, Xavier
Publication of US20130322104A1 publication Critical patent/US20130322104A1/en
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Classifications

    • F21S48/00—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • F21S48/212—
    • F21S48/215—
    • F21S48/2237—
    • F21S48/2268—
    • F21S48/2287—
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/49128—Assembling formed circuit to base

Definitions

  • the invention relates notably to an optical unit for a motor vehicle signaling and/or lighting device.
  • An optical waveguide is, for example, very schematically speaking, an elongate element of transparent material, generally having a cylindrical-type cross section. Near one of the ends of the guide, referred to as the input face of the guide, there is or are one or more light sources, for example a small-sized light source of the light-emitting diode type: the rays of light emitted by the source travel by total reflection along the length of the guide toward its opposite end referred to as the terminal face of the guide.
  • the guide thus emits light along its entire length. It has the advantage of being able to adopt very varied geometric shapes, of being straight or curved, and of conveying a lighting surface even to somewhat inaccessible regions of the vehicle light or headlamp. It thus makes a substantial contribution to the style of the light or headlamp.
  • Such lighting device with an optical waveguide for a motor vehicle is known for example from patent application EP 1 780 463.
  • one subject of the invention is an optical unit, notably for a motor vehicle signaling and/or lighting device, comprising:
  • the board is Secured, directly or indirectly, to the light guide by clip-fastening.
  • the optical unit comprises a hood fixed, preferably by clip-fastening, to the light guide and designed to accept the board.
  • the hood is designed to be fixed to the board by clip-fastening.
  • the hood comprises at least one clip-fastening tab, notably at least two clip-fastening tabs, notably facing one another.
  • the hood comprises at least one positioning tab for the board, preferably at least two positioning tabs notably facing one another.
  • the hood comprises at least one slot designed to accept one edge of the board. This allows the board to be positioned and held in position.
  • the board may, if appropriate, bear an electrical connector connected to the electric circuit of the board, and the hood advantageously comprises a housing designed to accept this connector, at least partially.
  • the hood is designed to prevent light from the light guide and/or from the light source from leaking to the outside.
  • the hood comprises a barrel at least partially surrounding an end portion of the light guide, the barrel making it possible to prevent light from leaking to the outside.
  • the barrel of the hood surrounds the light source.
  • the light guide comprises a main body of elongate shape along a predetermined curvilinear axis, and a tab running transversely to this predetermined direction, and connected to this body.
  • the hood comprises a cavity designed to accept at least an end portion of the transverse tab of the light guide.
  • the hood comprises at least one clip-fastening tab designed to collaborate with the transverse tab of the light guide, this clip-fastening tab being notably parallel to the aforementioned barrel.
  • the barrel may have a slot for the passage of the transverse tab of the light guide.
  • the hood is made as a single piece.
  • the light guide is made as a single piece, including the transverse tab, which tab notably corresponds to an injection tab.
  • the light guide comprises two longitudinal ends and each of these ends accepts a light source and a board, and possibly a hood as aforementioned.
  • the board bearing the light source is notably a printed circuit board.
  • Another subject of the invention is a lighting and/or signaling device, notably for a motor vehicle, comprising an optical unit as defined hereinabove.
  • This device may for example be designed to contribute to a legally-required signaling function, notably a DRL (daytime running light) function or a town beam function.
  • a legally-required signaling function notably a DRL (daytime running light) function or a town beam function.
  • a further subject of the invention is a method for fixing a light source to a light guide in a motor vehicle lighting and/or signaling device, this method involving the following steps:
  • the method may involve the following step:
  • FIGS. 1 to 3 are schematic and partial perspective illustrations of the optical unit according to one embodiment of the invention, from different angles;
  • FIG. 4 is a schematic and partial perspective depiction of the optical unit of FIGS. 1 to 3 , without the printed circuit board;
  • FIG. 5 is a schematic and partial depiction of the light guide of the optical unit of FIGS. 1 to 4 by itself;
  • FIG. 6 is a schematic and partial cross section through the optical unit of FIGS. 1 to 4 .
  • FIGS. 1 to 3 and 6 depict an optical unit 1 for a motor vehicle signaling and/or lighting device which comprises:
  • the board 3 is borne by the light guide 5 , namely for example during a handling operation (notably on a production line), it is possible to take hold of the light guide with the board remaining secured to this light guide, preferably via a hood described later on.
  • the light guide 5 has a cross section of substantially circular shape.
  • this light guide 5 is based on a transparent polymer made of polycarbonate (or polymethylmethacrylate PMMA, or other suitable polymer).
  • the light guide 5 comprises a main body 8 of curved elongate shape along a predetermined curvilinear axis X, and a tab 9 running transversely to this predetermined direction X (as can be seen in FIG. 5 ).
  • the body 8 of the light guide may be of rectilinear shape.
  • the tab 9 has a shape with two bends 11 . This tab 9 acts as an injection tab.
  • the body 8 of the light guide 5 also has positioning bosses 12 for positioning a hood that is described later on.
  • the light guide 5 comprises a light input facet 6 at one of the ends of the body 8 , and the light-emitting diode 2 is positioned facing this.
  • the body 8 of the light guide may possibly have another end facet, opposite the facet 6 , with another LED positioned facing it.
  • the light guide 5 further comprises two main faces oriented along the length thereof along the curvilinear axis X:
  • the optical unit 1 comprises a hood 15 fixed, by clip-fastening, to the light guide 5 and designed to accept the board 3 .
  • the hood 15 comprises two clip-fastening tabs 16 facing one another and which hold the board 3 in position after fitting (see FIG. 3 in particular).
  • the hood 15 comprises positioning tabs 17 against which the board 3 is held.
  • the hood 15 comprises a plurality of supports 18 , three of them in the example described, on which the board 3 rests (see FIG. 4 ).
  • the hood 15 also comprises a slot 19 designed to accept one edge 20 of the board 3 , so as to position it and hold it in position.
  • the axis X of the body 8 of the guide 5 intersects the board 3 more or less at right angles (see FIG. 6 ).
  • the board 3 bears an electrical connector 23 connected to the electric circuit of the board, and the hood 15 comprises a housing 24 designed to accept this connector 23 , at least partially.
  • the hood 15 is designed to prevent light from the light guide 5 and/or from the light source 2 from leaking to the outside.
  • the hood 15 comprises a barrel 26 substantially surrounding an end portion 27 of the light guide 5 , the barrel 26 making it possible to prevent light from leaking to the outside, as depicted notably in FIGS. 1 and 6 .
  • the barrel 26 which is substantially cylindrical, of the hood also surrounds the LED 2 .
  • the hood 15 has a cavity 29 designed to accept at least an end portion 30 of the transverse tab 9 of the light guide 5 (see notably FIG. 2 ), to avoid leaks of light coming from the tab 9 .
  • the hood 15 comprises a clip-fastening tab 32 designed to collaborate with the transverse tab 9 of the light guide, this clip-fastening tab 32 running being notably parallel to the aforementioned barrel 26 (see notably FIG. 2 ).
  • the barrel 26 comprises a slot 33 for the passage of the transverse tab 9 of the light guide 5 .
  • the hood 15 is made as a single piece, for example out of plastics material.
  • the board 3 bearing the light source is notably a printed circuit board.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Led Device Packages (AREA)
US13/979,772 2011-01-18 2012-01-17 Optical unit for signaling and/or lighting device Active US9068709B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1150375A FR2972975B1 (fr) 2011-01-18 2011-01-18 Unite optique pour dispositif de signalisation et/ou d'eclairage
FR1150375 2011-01-18
PCT/EP2012/050651 WO2012098123A1 (fr) 2011-01-18 2012-01-17 Unite optique pour dispositif de signalisation et/ou d'eclairage

Publications (2)

Publication Number Publication Date
US20130322104A1 US20130322104A1 (en) 2013-12-05
US9068709B2 true US9068709B2 (en) 2015-06-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US13/979,772 Active US9068709B2 (en) 2011-01-18 2012-01-17 Optical unit for signaling and/or lighting device

Country Status (8)

Country Link
US (1) US9068709B2 (es)
EP (2) EP3163343A1 (es)
JP (1) JP5989670B2 (es)
CN (1) CN103329020B (es)
BR (1) BR112013017525A2 (es)
ES (1) ES2629058T3 (es)
FR (1) FR2972975B1 (es)
WO (1) WO2012098123A1 (es)

Cited By (2)

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US11536434B2 (en) * 2018-11-30 2022-12-27 Valeo Vision Luminous device
US20230118012A1 (en) * 2021-10-20 2023-04-20 Ford Global Technologies, Llc Vehicle lighting assembly and lighting method

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CN103292209B (zh) * 2012-03-02 2015-06-17 赛恩倍吉科技顾问（深圳）有限公司 背光模组
AT516170B1 (de) * 2014-09-16 2016-03-15 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung mit darin verriegelbarer lichtleiteranordnung
EP3224536B1 (en) * 2014-11-24 2022-01-26 InterDigital Madison Patent Holdings, SAS Light emission structure and device with light emission structure
FR3030685B1 (fr) * 2014-12-19 2019-11-29 Valeo Vision Dispositif d'eclairage et/ou de signalisation comportant un guide de lumiere
FR3034169B1 (fr) * 2015-03-23 2020-05-29 Valeo Iluminacion Module lumineux pour vehicule automobile comprenant deux guides de lumiere et un radiateur comprenant deux faces de montage
CN205991447U (zh) * 2016-05-05 2017-03-01 芜湖法雷奥汽车照明系统有限公司 光导组件以及车灯
ES2600317B2 (es) * 2016-12-30 2018-04-17 Seat, S.A. Dispositivo de iluminación para un vehículo y procedimiento de fijación asociado
JP6902354B2 (ja) * 2017-01-24 2021-07-14 株式会社小糸製作所 光源ソケットとライトガイドを備えた灯具
DE202017100874U1 (de) * 2017-02-17 2018-05-18 Lisa Dräxlmaier GmbH Beleuchtungsvorrichtung für ein Innenausstattungsteil
FR3063049B1 (fr) * 2017-02-23 2021-06-25 Valeo Vision Module lumineux pour vehicule automobile
US10641473B2 (en) * 2017-03-30 2020-05-05 Valeo North America, Inc. Folded heat sink with electrical connection protection
FR3068109B1 (fr) * 2017-06-27 2019-10-04 Valeo Vision Dispositif et systeme d'eclairage pour vehicule automobile utilisant une diode electroluminescente organique
FR3083846B1 (fr) * 2018-07-10 2021-06-04 Psa Automobiles Sa Module lumineux integre a un projecteur d’un vehicule.
EP3594565B1 (en) * 2018-07-11 2022-06-01 Marelli Automotive Lighting Italy S.p.A. Automotive light
CN108954215A (zh) * 2018-08-08 2018-12-07 常州星宇车灯股份有限公司 一种防止产生亮点的光学组件
JP7271117B2 (ja) * 2018-09-19 2023-05-11 株式会社小糸製作所 車両用灯具および車両用灯具の製造方法
EP3745017A1 (de) * 2019-05-29 2020-12-02 ZKW Group GmbH Beleuchtungsvorrichtung für einen kraftfahrzeugscheinwerfer
CN112146051A (zh) * 2019-06-26 2020-12-29 法雷奥市光（中国）车灯有限公司 车灯
EP3812814A1 (en) * 2019-10-23 2021-04-28 Volvo Car Corporation An improved housing for coupling of light from a light source to an optical light guide
FR3104233B1 (fr) * 2019-12-04 2022-02-18 Valeo Vision Ensemble de guidage de lumiere pour un vehicule automobile
FR3130940B1 (fr) * 2021-12-22 2023-12-15 Valeo Vision Belgique Dispositif lumineux pour véhicule automobile

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US4195330A (en) * 1975-12-08 1980-03-25 Savage John Jun Lens clip and cap for led or light unit assembly
US5440468A (en) * 1994-05-16 1995-08-08 Savage, Jr.; John M. Lens clip and cap for led and gripped panel assembly
US6302595B1 (en) * 2000-03-14 2001-10-16 Bivar, Inc. Optical transmission system
US6779929B1 (en) * 2000-05-23 2004-08-24 John M. Savage, Jr. Lens unit and fiber optic cable assembly
US6527411B1 (en) * 2000-08-01 2003-03-04 Visteon Corporation Collimating lamp
EP1780463A1 (fr) 2005-10-27 2007-05-02 Valeo Vision Dispositif d'eclairage ou de signalisation à guide optique pour véhicule automobile
US20070250006A1 (en) * 2006-03-22 2007-10-25 Conmed Endoscopic Technologies, Inc. Measuring movement of an elongated instrument
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Publication number Priority date Publication date Assignee Title
US11536434B2 (en) * 2018-11-30 2022-12-27 Valeo Vision Luminous device
US20230118012A1 (en) * 2021-10-20 2023-04-20 Ford Global Technologies, Llc Vehicle lighting assembly and lighting method

Also Published As

Publication number Publication date
EP2666043B1 (fr) 2017-04-12
CN103329020A (zh) 2013-09-25
EP2666043A1 (fr) 2013-11-27
ES2629058T3 (es) 2017-08-07
JP5989670B2 (ja) 2016-09-07
JP2014508380A (ja) 2014-04-03
FR2972975B1 (fr) 2014-08-22
EP3163343A1 (fr) 2017-05-03
WO2012098123A1 (fr) 2012-07-26
CN103329020B (zh) 2016-02-10
FR2972975A1 (fr) 2012-09-28
BR112013017525A2 (pt) 2016-10-04
US20130322104A1 (en) 2013-12-05

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